From the dazzling to the daring, to the downright bizarre, we're inside the world's most extreme homes. This amazing assortment includes a house in Idaho that dangles off a cliff, an old home in The Netherlands that has been turned into an abstract work of art, a California party pad with water running through it and a Japanese home made from a box and a ball. San Francisco has a zigzag house, a modern home in Italy started life 300 years ago as a rustic tool shed and a South African residence looks like it is made of twigs. An Australian home loves straight lines while an ancient residence in France used to accommodate monks and a house in Wales flies over a river and a Canadian home embraces a waterfall.